皮皮学，免费搜题
登录
搜题
【单选题】
听力原文： Tomaz Humor had spent nearly a week huddled on a shelf of the cliff six thousand meters up Nanga Parbat. He was held in his unsteady and dangerous position by ice screws and ropes. The temperature inside his sleeping bag was minus five degree Celsius. Repeated attempts to rescue him failed because of snowstorms and avalanches. But on Wednesday two Pakistani military helicopters managed to fly close enough to his perch for one of them to dangle a line to him. What has happened to Tomaz Humar?A.
He fell off the mountain.
B.
He lost his way to his base camp.
C.
He was held by ice screws and ropes on the cliff.
D.
He lost his sleeping bag.
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】铝合金保险杠是由__________构成的管状保险杠,这种保险杠具有造型多、美观、气派等特点,多用于__________和__________
【简答题】液动换向阀是利用控制(1)的作用力控制(2)改变工作位置,实现换向的,它的特点是适于(3)流量回路。
【多选题】患者女性，38岁，反复出现活动后肉眼血尿3年，每经对症处理可以缓解，近3个月来发作频繁，腹部泌尿系统平片（KUB）检查，发现左肾盂有不规则的“铸形”结石，约5.0cm×2.5cm。尿常规检测，镜下可见较多白细胞。
该结石的成分多为（）【提示】经上述治疗后得到的结石外观为灰白色，质地脆，容易被粉碎。
A.
胱氨酸结石
B.
草酸盐结石
C.
尿酸盐结石
D.
磷酸钙结石
E.
磷酸镁铵结石
F.
二磷酸盐结石
G.
黄嘌呤结石